SINGLE SPIN DETECTION WITH THE SCANNING TUNNELING MICROSCOPE

00:00 25-03-2008

'Courier New'; mso-ansi-language: EN-US; mso-fareast-font-family: Calibri; mso-fareast-theme-font: minor-latin; mso-fareast-language: EN-US; mso-bidi-language: HE">We are using the noise power in the tunneling current at the Larmor frequency of a single electron spin to detect it withthe STM. Several spins center were detected. Pb centers, iron atomsand paramagnetic molecules adsorbed on the surface. Severalspectral parameters were measured from the g value, to hyperfinecoupling and a certain type of lifetime. We demonstrate thatlooking at several spins give a line-shape that is similar tomacroscopic ESR. We also demonstrate that this line-shape can beaffected by changing the tunneling conditions. The instrumentalaspect of this method will be discussed, together with the possiblemechanism, and future potential. /> />